Coin controlled liquid dispensing apparatus



Nov. 12, 1935. w. s. BATES COIN CONTROLLED LIQUID DISPENSING APPARATUS 6SheetsSheet l Nov. 12, 1935. w, s, BATES com CONTROLLED LIQUIDDISPENSING APPARATUS Filed Jan. 12, 1951 6 Sheets-Sheet 2 ATTORNEY.

Nov. 12, 1935. w. s. BATES 2,020,761

COIN CONTROLLED LIQUID DISPENSING APPARATUS Filed Jan. 12, 1931 6Sheets-Sheet 5 Nov. 12, 1935 I w. s. BATES COIN CONTROLLED LIQUIDDISPENSING APPARATUS Filed Jan. 12, 1931 6 Sheets-Sheet 4 Nov. 112,1935. w. s. BATES 2,020,761

COIN CONTRQLLED LIQUID DISPENSING APPARATUS Filed Jan. 12,' 1951 6Sheets-Sheet 5 Nov. 12, 1935.

w. s. BATES COIN CONTROLLED LIQUID DISPENSING APPARATUS Filed Jan. 12,1931 INVENTOR.

ATTORNEY.

Patented Nov. 12, 1935 UNITED STATES PATENT OFFICE 1 COIN CONTROLLEDLIQIIIgD DISPENSING This invention relates to coin-controlled liquiddispensing apparatus, and more particularly to means whereby a type ofmotor-driven dispensing apparatus now commonly employed at gasolinefilling stations, under the direction of attendants, may be operatedautomatically by the insertion of coins to deliver quantities ofgasolineproportioned to the value of the coin, and whereby the quantity ofgasoline delivered may be varied according to the current market priceof the gasoline.

In the type of apparatus to which my invention relates, as usuallyoperated, an attendant starts a motor which operates the pump, opens thevalve leading to the hose, and when the end of the nozzle on the hose isinserted in the supply tank of a motor vehicle, a valve in the nozzle isopened by the attendant and the liquid then flows from the pump througha metering device and thence through the hose to the tank.

In carrying out my invention I provide means whereby, upon inserting acoin in a coin chute and moving a coin-connecting bar, the motor whichoperates the pump will be automatically started and the valve leading tothe hose will be automatically opened. Then, upon opening the valve inthe nozzle, the flow of liquid through the metering device causes thelatter to actuate tripping mechanism which perates,-after apredetermined quantity of gasoline has been de-' livered, to close thevalve at the inner end of the hose, to open a switch which stops themotor and pump and to restore the various parts of the mechanism totheir normal positions. The invention includes means whereby thequantity of gasoline delivered will be in proportion to the value of thecoin inserted in the machine and also the quantity delivered may bevaried to correspond with changes in the market price of gasoline.

In the accompanying drawings:

Fig. 1 is a vertical section through the apparatus, approximately on theline I-l of Fig. 2, the enclosing casing being shown partly in sideelevation and partly in section;

. Fig. 2 is aview showing the mechanism in elevation, looking from rightto left in Fig. 1.

the casing being shown partly in section;

Fig. 3 is a top plan view of the coin-operated mechanism, and showingalso the rods which move the switch lever;

Fig. 4 is a front view of the coin-operated mechanism, the clutch andconnecting link being omitted;

Fig.5 is a rear elevation of the same,

Fig. 6 is a top plan view of the coin-connecting bar;

Fig. 7' is a perspective view of the lever for restoring thecoin-controlled levers to their normal positions;

Fig. 8 is a detailed view of the mechanism shown in the central part ofFig. 2, the meter and parts above the meter shaft being omitted;

Fig. 9 is a detailed view of the tripping bar 10 and associated parts;

Fig. 10 is a vertical section through .the same;

Fig. 11 is a view showing in detail the mechanism illustrated in thelower part of Fig. 1, for operating the rod which opens the outlet valveand for actuating the resetting lever, the various parts being shown intheir normal positions; 1

Fig. 12 is a view similar to that shown in Fig. 11, partly broken awashowing the posi-- tions of the parts while the drive-shaft is inoperation;

Fig. 13 is an enlarged side elevation of the tripping mechanism, theparts being in normal position;

Fig. 14 is a similar view illustrating the action of the trippingmechanism when a coin of the smaller denomination is used to operate themachine;

Fig. 15 is an enlarged side elevation of the 0 tripping mechanismshowing the wedge locked in its lower position, as at the commencementof operation by a coin of the larger denomination, the cams beingomitted;

Fig. 16 is a similar view illustrating the tripping operation, and

Fig. 17 is a section on the line l'i--l'i of Fig. 15.

Reierring to Figs. 1 and 2 of the drawings,

a represents an upright casing in which the apparatus is enclosed. Inone side of the casing 40 are coin slots from which coin chutes I and 2lead downwardly to coin controlled mechanism for closing a switch b tostart an electric motor c. The chute I is adapted to receive coins ofone size and denomination, as for instance 25-cent pieces, and the chute2 is adapted to receive coins of larger size and denomination, asinstance -cent pieces. The coin operating. mechanism is, in itsessential features, the same as in my Patent No. 1,183,522, dated May 5016, 1916. A coin dropped into the chute l enters a slot la (Fig. 3)formed by a cross piece 3a on a yoke 3 and a stationary bar 4, and restson roller 5 supported by bar 5a. Similarly, a coin dropped into thechute 2, enters a slot in between a cross piece Go on a yoke 6 and thestationary bar 4 and rests on a roller 1. The yoke 3 has one arm 3bpivoted in the bar 4 and a parallel bar 8, and the opposite arm 30extends through arcuate slots 9 in said bars. The arm 30 also carries aroller I which lies in the plane of the roller 5. Similarly, the arm 61;of the yoke 6 is pivoted in parallel bars and the arm 60 is movable inslots ID in the bars and carries a roller II. A triangular bell cranklever I2 is secured to the ends of the yoke 3 and a similar lever |3 issecured to the ends of the yoke 6.

A notched connecting bar I4 is movable horizontally beneath the coinslots la and 2a by means of a crankshaft I5, upon which :is a onewayclutch l6 connected by a link H to the connecting bar, whereby onerevolution of the crank shaft will cause the connecting bar to move tothe left in Figs. 3 and 5, or to the right in Fig. 4, and then return tothe position shown in said figures. If a coin is dropped into the slotIa. and

' the crank shaft is turned, the coin will be carried by the connectingbar under the roller l0 and will rock the arm 30 of the yoke upwardlyand swing the lower end of the lever l2 to the left in Fig. 5, and afterpassing under the roller the coin will drop into a pocket I8 (Fig. 1)and the connecting bar will then return to its original position.Similarly, a coin dropped into the slot 2a will rock the yoke 6 and thelever |3 when the crank is given a complete turn.

I The lower end of the lever I2 is pivotally connected by a link I9 to aswinging arm'20, which is pivoted at 20a to the bar 8 and dependstherefrom, so that any rocking movement of the lever l2 causes acorresponding rocking movement of said arm. A yoke 2| on one side of thelink I9 is engaged by one arm (1' of a. restoring lever d, and one arm 2la of this yoke forms a convenient pivot pin for connectingithe linkwith the lever I2. A link 22 is pivoted at one end to the lower end ofthe lever l3, and this link has a slot 22a through which the arm 2|a ofthe yoke 2| extends. It will be seen from this construction that if thelever I2 is swung to the left inFig. 5, the supporting arm 20 will swingwith it, without moving the lever l3; but if the lever I3 is swung tothe left in said figure, it will, through the links 22 and I9, swing thesupporting lever 20 to the left and also the lever I2. A rod 23 ispivoted at one end tothe supporting lever 20, and its opposite end has aslot 23a-into which the lever 24 of the switch b extends. When the lever20 swings to the left as in Fig. 8, this rod is moved to close theswitch and start the motor; but when the rod is returned to its normalposition, it does not operate the switch lever, owing to the lost motionconnection between the rod and the switch lever.

The restoring lever d, as shown in Figs. 3, 4, 5, '7 and 8, is a forkedlever having its lower end pivoted to a supporting bracket 24, andhaving a short arm d which extends into the yoke 2|, and a longer arm 41which projects upwardly at the rear end of the coin connecting bar l4.When a coin is inserted in the machine and the crank is turned, theconnecting bar moves the coin to rock one'of the levers l2 or l3, andthe switch is thrown to the on position. vDuring this movement the yoke2| causes the restoring lever d to move and its arm d follows theconnecting bar l4 to the limit of its forward movement, as shown in Fig.8. When the bar starts on its return movement, it bears against the arm(1 and rocks the restoring lever backward, and its arm d, engaging theyoke 2|, moves the link IE to the position shown in Figs. 4 and 5,thereby returning the supporting arm 20, switch rod 23 and lever l2 tonormal positions, and also the lever |3, if the latter has been movedfrom normal position.

From the foregoing it will be seen that by inserting a coin in eithercoin slot and turning the crank arm, the motor will be started and thenthe 6 coin controlled mechanisms will be returned to normal positionswithout opening the switch. The function of the lever l2, when operatedby a 25- cent coin, is merely to close the switch, while the lever I3,when operated by a 50-cent coin, causes the switch to close and alsocauses adjustments to be made whereby the amount of gasoline deliveredwill be in proportion to the value of the coin used. Y

In the type of gasoline dispensing apparatus to which my inventionrelates, the liquid is forced by a pump, operated by the motor 0,through a. metering device a and thence to an outlet fitting. to whichis attached a hose 26, and the hose is provided with a nozzle 21 havinga normally 25 closed valve 28 which may be opened by the operator afterthe nozzle has been inserted in the filling opening of an automobiletank.

The fitting 25 is provided with a valvev 29 which is held normallyclosed by a spring 3|! connected 30 to the valve lever 30a, as shown inFig. 2. The metering device operates a hand 3| which turns about a dial3|a having a scale which indicates the amount of liquid passing throughthe meter.

In the present invention the hand is mounted upon a shaft 32 which isoperated by the metering device.

A drive shaft 33 is mounted in the lower part of the casing and suitablygeared to the motor,

as by a. sprocket wheel 34 and chain 35. Upon the drive shaft is afriction clutch 36 composed of disks which rotate with the shaft and adriven member 38, consisting of a flat crank arm which is looselyiournaled on the shaft and frictionally gripped by the disks under thepressure of a spring 31. The crank arm, as shown in Figs. 11, 12 and 16,is connected by a link 39 to the lower end of an upwardly extendinglever 40 which is pivoted at 40a to the frame of the manected by a link4| to an arm 42 which is pivotally mounted on the shaft 32 and adaptedto reset certain of the devices in their initial positions, ashereinafter explained. .The link 39 is centrally chine. The upper end ofthe lever 40 isconso pivoted to the driven clutch member 38 at 38a 5;

and the rearward part 39a of the link has an overturned end 39b adaptedto engage themember 38 l and limit the movement of the latter when theshaft 33 is turned by the motor in the direction of the arrow, Fig. 12.61 An L-shaped bracket 42b, secured to the frame, has on its foot 42 aguide pin 43 which extends through a perforation in the foot 440, of anL-shaped member 44, one end of which is pivotally connected to the.lever 40 at 45. A helical 6 spring 46 surrounds the pin 43 and isinterposed between the foot 44a and an adjusting nut 43a on the pin. Thespring normally holds the foot of the member 44 against the foot of thestationary member 42b, and the lever 40, restoring 1 arm 42 and clutchmember 38 normally occupy the positions shown in Fig. 11. When the motorstarts, the frictionally drivrn crank 38 is carried to the positionshown in Figs. 12 and 16 and is stopped by the engagement of theshoulder 33111 on the link 39 with the edge of the member 38, as shownin said latter figures, while the shaft and the friction disks thereoncontinue to turn. As the clutch member 38 moves to the position shown inFig. 12, the lever 48 and the arm 42 move to the positions shown in saidfigure and the lever 48 moves the L-shaped rod 44 and compresses thespring 46. When the current is out off from the motor and the driveshaft 33 slows down, the spring 46, through the connections described,causes the clutch member 38 to slip backward and reset the parts in thepositions shown in Fig. 11.

When the motor starts and the clutch member 38 is turned from its normalposition to the position shown in Figs.12 and 16, a rod 41 is pulleddownwardly against the action of the spring 39 (Fig. 2) and thisdownward movement of the rod opens the valve 29 to permit gasoline toenter the hose. The rod 41 is connected to the clutch member 38 througha mechanism which releases the rod and allows it to move upwardly toclose the valve as soon as the switch b is operated to stop the motor 0.As shown, a link 56 is pivoted at one end to a bracket and has a pin 52projecting laterally from its opposite end. A link 53 connects this pinwith the frictionally driven member 38, and the pin projects through a1ongitudinal slot 54 in the rod 41. A latch 55, pivpivoted at 56 to thelower end of the rod 41, is normally held under the pin 52, as shown inFig. 11, by a spring 51 which surrounds a pin 58 on the upper end of thelatch and is interposed between the head of the pin and a flange 59 onthe rod 41.

As the latch normally extends under the pin 52, the link 53 will drawthe rod 41 downward and open the valve 29 each time the drive shaft 33is started by the motor, and the rod will stay down until the pin 52 isreleased by the latch, when the spring 39 will draw the rod up and closethe gasoline outlet valve. For releasing the latch a lever 68 isprovided, and this lever is pivoted to an arm 6| on the rod 41, and isalso pivotally connected at 62 to the upper end of the latch. The leverhas at its free end a flange 66a which is perforated, and a tappet rod63 extends through this flange and has an adjustable tappet member 64threaded onto its end. The tappet rod extends upwardly and is connectedto one end 65a of a lever 65 which is centrally pivoted upon a bracket66. The opposite end of said lever is connected by a link 61 to thelower end of a rod 68 which extends upwardly for some distance above theshaft 32 and is pivotally connected at its upper end to the upper end ofbar 69 which is journaled near its lower end on the shaft 32. The rod 68is bent so that its point of pivotal connection, 68a, with the bar 69,will be normally at the right of a line passing through the axis of theshaft and thelower pivotal point 68b of the rod, as shown in Figs. 13and 15; but when the bar 69 is moved to the left, as indicated in Fig.16, until the pivotal point 68a passes beyond said line, a coiled spring18, having an arm which bears downwardly upon a pin 68b at the lower endof the rod 68, draws said rod quickly downward, and the centrallypivoted lever 65 is rocked as shown in Fig. 16, raising the tappet rod63, and the tappet 64 thereon operates the lever 69 to movethe latch 55and thereby unlock the pin 52 from the rod 41, and the spring 36thereupon moves the latter rod upwardly to permit the outlet valve 29 toclose. g, This downward movement of the rod 68 also operates to open theswitch b and thereby cut off current from the motor c which operates.the drive shaft 33 and the pump. As shown in Figs.

2, 3 and 8, a lever 12 is secured to a shaft 13 and this shaft has acrank arm 13a connected to a 5 flange on the link 61. To the free end ofthe lever 12 is connected a rod 14 having a hook at one end for movingthe switch lever 24 to the off position. Thus the valve 29 is closedimmediately when the bar 69 swings past a certain 10 point and thecurrent is then immediately cut off from the motor.

When the electric motor is started by the insertion of a coin of thesmaller denomination in the chute I and turning the hand crank, thepump, in the type' of dispensing apparatus to which my invention isapplied, starts into operation, and the valve in the outlet 25 isopened, but no gasoline flows through the metering device and hose untilthe operator opens the valve in the nozzle at the free end of the hose.When this happens, the metering device turns the shaft 32 in theclockwise direction, looking from left 'to right in Fig. 2, to carry thepointer 3| around on the dial 31a to indicate the volume of gasolinedelivered through the hose. When the electric motor starts, therestoring arm 42 is also moved from the position shown in Figs. 1, 11and 13 to the position shown in Figs. 12 and 14 by the operation of themotor, as heretofore explained.

When the metering device operates the shaft 32, the latter carries withit two cam members e and 1, which are secured together and to a sleeve15 (Fig. 8) which is slidable to a limited extent longitudinally of theshaft, but held against 85 rotation thereon by a collar 16 having atongue 16a which extends into a longitudinal slot in the sleeve. Ahelical spring 11 interposed between. ,the collar and thecam membersurges the latter toward a rod 18 which is vertically movable between thecammembers and a stationary part 19 through which the shaft extends. Theupper end 18a of this rod is bent into the form of a. loop to form awedge, so that when the rod is pulled downwardly, it will force the twocam members to the left in Figs. 2 and 8 against the pressure of thespring, and when the rod is moved upwardly, the spring will press thecam members closer to the part 19. The looped end of the rod isvertically slotted as shown at 181), Fig. 10, and the shaft extendsthrough this slot.

The cam members e and f are made of sheet metal, riveted together intheir lower portions and having their upper portions spaced apart andlying in parallel planes. The member e has a cam surface 80 and themember has a. cam surface 8|. The tripping arm 69 has alongitudinalguide slot 690, and a plate 82 is longitudinally adjustable on the armby means f screws 83 and 84 which extend through the slot and into theplate. This plate has a lateral extension 82a, the end 82b of which isturned over to form a shoulder adapted to be engaged by the cam surfacesof the members e and f. A vernier plate 85 is loosely mounted on theshaft 32 and has a slot 86 through which the screw 84 extends. This slotis at right angles to the slot 69a when the plate 82 is in its lowermostposition. By loosening the screws 83 and 84 and adjusting the vernier totheleft, in Fig.9, the plate 82 will be moved upwardly and its shoulder82b will be raised with respect to the cam surfaces of the cam members eand I. An arcuate scale 81 on '7 the vernier plate is readable along theedge 82::

of the plate 82. This adjustment, as will be herein its upper position,

4 inafter more fully explained, is to vary the amount of gasolinedelivered according to the price at which gasoline may be selling. Afterthe plate 92 has been adjusted to any desired position, the screws 93and 94 will be tightened to hold said plate and the vernier in theiradjusted positions.

The shoulder 821) on the plate 82 projects across the planes of theupper parts of both of the cam members e and 1, when the wedge member 69is and if these members be rocked to the left, by the rotation of theshaft 32, from the position shown in Fig. 13 to the position shown inFig. 14, the cam surface 8| on the member I will engage said'shoulderand continued movement of the cam member will cause the tripping arm 69to pass over the center of the shaft and thereby allow the rod 68todrop, as shown in Fig. 16, and operate the switch I) to its offposition and also release the latch 55 to permit the rod 411 to moveupwardly and close the outlet valve 29. Thetime at which this trippingaction will occur depends upon the adjustment of the plate 82 on thetripping arm. If it is adjusted radially outward on the arm, the camsurface 8| will engage the shoulder later in the operation of the shaft32, which isoperated by the metering device, and hence more gasolinewill be delivered before the'parts are tripped.

If the wedge member I9 is pulled downward, it

" moves the cam members e and ,f away from the plate 82 so that themember i will pass by the shoulder 82b and said shoulder will be engagedat a later period-in the operation of the meter shaft by the camsurface'89 on the member e, which is back of the cam surface on themember f. Hence a'greater quantity of gasoline will pass through themeter before the-member e engages said shoulder and trips the member 69to open the switch which controls the electric motor and to close thevalve 29.

When a -25-cent coin is used to operate the motor, the wedge member 18remains in its upper position and the cam member'f trips the parts whichclose the outlet valve 29 and cut off the current tothe motor when agiven amount of gasoline hasbeen deliveredfbut when a 50-cent coin isuzed, the wedge is pulled down automatically and locked in its loweredposition, thereby adjusting the cam members so that the member e willtrip said parts after a proportionately greater amount of gasoline hasbeen delivered The wedge-piece 18, as shown in Figs. 13 to 16, extendsbelow the shaft 32 and is pivotally con-' nected at its lower end to thefree end of the lever 99 by a pin 9|, The opposite end of said lever ispivoted to a stationary bracket 92. A wire link 93 is pivotallyconnected at one end to .the lever 99, and the opposite end of the linkis formed into a relatively long loop which extends through a relativelylong slot 94a in an arm 94b of a lever 94 (Fig. 8). This lever isconnected by a link 95 to the lower end of the coin controlled lever I3which is operable by 50-cent coins.

When the lever I3 is rocked by a coin, through the connections justdescribed, the wedge member 18 is pulled downward to the position shownin Figs. 8 and 15,- thus setting the cam members e and f in the positionwhere the member f will be out of line with the shoulder 92b and onlythe cam member e can engage said shoulder. The wedge member isautomatically locked in this lowered position, as shown in Fig. 15, bythe following .mechanism: A locking plate 96 is pivot- 'zontal part ofthe slot 99,

ally suspended from a fixed support 19, by a stud or screw 98,-andhangs-downwardly from the support. This plate hasan L;-shaped $100995one part of which extends-longitudinally ofa'the plate and the lowerpartof whichextends trans- 5 versely of the plate. The pin -9I, whichconnects the lever 99' with the wedge-strip, extends through said slot.A stirrup I99,--pivoted' on thestud 99, lies against the plate96 and'hasaflange. I9| at "its lowersend. Axrod I92-pivoted at 'itso lower endon'thepin 9 I extends upward through ahole in said flange and has a headI920. at'its upper end. Between said headi-and the flange is a coiledspring I93=which"presc..s 'the ro'd-zhp wardly and'normallyholds.the'pin= 9I-in the'l'5 vertical arm of =the slot 99,-and as thewedge piece 18 is supported-by. said latter pin; the-springnormally-'holds-the wedge-piece in .its uppermostposition, asindicatedinFigs. 10, 1'3 andl. locking plate, as shown-in Fig. '17, hasa flange- 20 96a at one side which forms an abutment for a spring I94interposed. between said flange anda which is-pivoted on" the pin 9|.This-spring urges the locking plate to the leftin Figs. 13 to 17., andhence when the 25 link 99, in .which the pin- 9| is mounted;-is-pulleddownward until the pin is in linewith'the horithe spring movesthe' cking plate to the leftand the pin enters the horizontal part ofthe slot and is locked against an upward movement, as shown in Fig. 15.A rod I96 extends freely 'through perforations in the flanges 96a andI95a andthe spring is coiled around this pin. This rod has a headI96diat one end adapted to .engage'theflangeon thew-i5 locking plate andmove the plate to the/right to unlock the pin 9|. The opposite-end ofthe'rod is pivoted at I9'| to the downwardly-turned and I98a of afloating lever I99, one end 01" which-15 connected by a link 'I 99 tothe supporting bracket 40 92. The tripping bar 69 has an extension belowthe shaft 32 and this extension is pivotally-connected at II9 with the"floating'lever I98.

With this arrangement, when a-BO-cent coin is inserted in the machineand the coin con trolled lever I3 is rocked, thelink QS' rocks the lever94 and the latter, through the "link 93,ipulls' the lever 99andthe-wedge-piece TU-downward until the pin 9| is in line with-thehorizontal part of the slot 99 in the l'ockingplate', when-the springI94 moves the plate 96 into locking engagementwith the pin. As the wedgestrip 18 is connected at its lower end to said pm, said strip willbe'lowered and locked in its lowered position. This movement of thewedge strip adjusts the cams e and I so that only the former can tripthe devices which stop the gasoline flow and open the motor switch. Asthe cam surface 99 on the cam e is back of the cam surface on the cam f,the shaft 92, operated by the metering 90 device and carrying the cams,must be rotated further *before the cam e operates the tripping devices,than where these devices are tripped by the cam f, and hence a greaterquantity of gasoline will be delivered.

Whenthe bar 69, moved by the cam e, swings over the shaft, its iower endpulls the floating lever I98 outward, as illustrated in Fig. 16, and thehead I96a on the pin I96 (Fig. 1'?) engages the flange 96a on thelocking plate and pulls 70 said plate to the right until pin 9| is inline with the vertical part of the slot 99 when the spring I93 pullssaid pin and the wedge-piece, whichis I, attached to it, to their ,upperpositions. As the wedge-piece moves upward, the spring 15 on the shaft32 presses the cam members e and I back to their normal positions.

Fig. 15 shows the wedge-piece locked in its lower position. The wedge islocked in this position automatically when a 50-cent piece is insertedin the machine and the crank is turned. After the motor has started topump the gasoline and after the nozzle valve 28 has been opened by theoperator, the gasoline flows through the meter g and the shaft 32 turns.The cam members move with the shaft and the member e engages theprojection 82b on the plate 82 and rocks the bar 69 from its normalposition, shown in Fig. 15, to the over-center position shown in Fig.16, and the rod 68 descends, causing the rod 41 to be released from thelatch 55 and the switch b to be opened, whereby the flow of gasoline isstopped and the motor is also stopped, as hereinbefore explained. As thebar 69 swings from the position shown in Fig. 15 to the position showninFig. 16, its lower end, which is connected to the floating lever I08,moves the latter horizontally in the direction to bring the head on therod I06 against the flange 96a on the locking plate and move the latterto release the pin 9|, whereupon the spring I03 draws the wedge-piece 18upwardly to its normal position shown in Fig. 10 and 16 and the spring15 (Fig. 1) moves the cam members e and f to their normal positionswherein both members lie in the plane of the flange 82b on the plate 82.

The resetting arm 42, which normally stands.

in the position shown in Figs. 1, 11 and 13, is swung to the left out ofthe way of the cams, as indicated in Figs. 1 2 and 14, when the motor isstarted. But, after the switch which controls the electric motor hasbeen opened by the action of the tripping devices, the spring S in whichenergy derived from the motor is stored, operates the lever 40 and thelatter swings the restoring arm 42 back to the position shown in Fig.13, and in returning to this position it en. gages the cams and rocksthem back to the position shown in said figure.

What I claim is:

1. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a switch for starting and stopping said motor, coin-controlledmeans for closing said switch, a metering device, means actuated therebyfor opening said switch after a predetermined quantity of liquid haspassed through said device, and means, comprising a spring adapted to beplaced under tension by the operation of the motor, for automaticallyrestoring the metering device and the aforesaid switch actuatingmeans tonormal positions, after said switch has opened.

2. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a switch for starting and stopping the motor, coin-controlledmeans for closing the switch, a metering device, a normally closed valvefor controlling the flow of liquid through said device, means operatedby the motor for opening said valve, means operated by the meteringdevice for causing said valve to close and said switch to open after apredetermined quantity of liquid has passed thitough said device, andmeans operating to automatically restore the metering device, and themeans operated thereby to normal positions, after the switch has opened.

- 3. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a switch for starting and stopping the motor, coin-controlledmeans for closing said switch, a meter, tripping means foropening saidswitch, means operated by the meter for actuating said tripping meansafter a given quantity of liquid has passed through the meter, means foradjusting said meter-operated means so as to vary its time of ac- 5tuation of the tripping means and the quantity of liquid delivered, andmeans, comprising a spring adapted to be placed under tension by theoperation of the motor, for automatically restoring said meter andtripping meansto normal positions, after said switch has opened.

4. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a switch for starting and stopping the motor, coin-controlledmeans for closing the switch, tripping means for 15 opening the switch,a meter, a shaft operated by the meter, cams on the meter shaft,arranged in different angular relations, for actuating said trippingmeans, means operated by the coincontrolled mechanism for adjusting saidcams so that one cam will operate the tripping means if a coin of onesize is inserted in the machine and the other cam will operate thetripping means if a coin of larger size is inserted in the machine, andmeans for restoring said shaft, cams and tripping means to normalpositions, after the switch has been opened.

5. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a shaft operated by the motor, a switch for starting andstopping the motor, coin-controlled means for closing the switch, ametering device, a. valve for controlling the flow of liquid throughsaid device, a friction clutch on the shaft, a. rod connected to andmovable by said clutch to open said valve, a spring for moving said rodto close the valve, means operated by said metering device for openingthe switch and disconnecting said. rod from the clutch after apredetermined quantity of liquid has passed through said device, and fmeans for re-connecting said rod with the clutch after the switch hasopened.

6. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a shaft operated by the motor, a switch for starting andstopping the motor, coin-controlled means for closing the switch, ametering device, a valve for controlling the flow of liquid through saiddevice, a fricon clutch on the shaft, a rod connected to and' movable bysaid clutch to open said valve, a 60 spring for moving said rod. toclose the valve, means operated by said metering device fordisconnecting said rod from the clutch and for opening said switch aftera predetermined quantity of liquid has passed through said device, andmeans for re-connecting said rod to said clutch, after the switch hasopened.

7. In a liquid dispensing apparatus, a motor for pumping the liquid, aswitch for starting and stopping the motor, coin-controlled means forclosing the switch, a metering device, a shaft operated by said device,a cam member rotatable with the shaft, a bar journaled on the shaft andinclined upwardly therefrom and adapted to be swung into an oppositelyinclined position 05 by-said cam member, a rod pivotally connected tothe upper end of said bar and extending below the shaft, a springpressing said rod downwardly, means operated by said rod for opening theswitch, and means for restoring the meter and the'parts operated therebyto their normal positions, after the switch has opened.

8. In a liquid dispensing apparatus, an electric motor for pumping theliquid, a metering device, a switch for starting and stopping the 76having a, pin extending into said slot, a. latch on saidrod normallyengaging said pin, means actuated by the metering device for releasingthe latch from the pin and for opening the switch, and means forre-connecting the latch and pin, after the switch has opened.

WEIR s. BATES.

